﻿using Atletika.Common;
using Atletika.Helpers;
using Atletika.Shared.Entities;
using Atletika.Shared.Helpers;
using System;
using System.Collections.Generic;
using System.Globalization;
using System.IO;
using System.Linq;
using System.Runtime.InteropServices.WindowsRuntime;
using System.Threading.Tasks;
using Windows.Foundation;
using Windows.Foundation.Collections;
using Windows.UI.Popups;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Controls.Primitives;
using Windows.UI.Xaml.Data;
using Windows.UI.Xaml.Input;
using Windows.UI.Xaml.Media;
using Windows.UI.Xaml.Navigation;

// The Items Page item template is documented at http://go.microsoft.com/fwlink/?LinkId=234233

namespace Atletika
{
    /// <summary>
    /// A page that displays a collection of item previews.  In the Split Application this page
    /// is used to display and select one of the available groups.
    /// </summary>
    public sealed partial class CompetitionsPage : Page
    {
        private NavigationHelper navigationHelper;
        private ObservableDictionary defaultViewModel = new ObservableDictionary();

        /// <summary>
        /// This can be changed to a strongly typed view model.
        /// </summary>
        public ObservableDictionary DefaultViewModel
        {
            get { return this.defaultViewModel; }
        }

        /// <summary>
        /// NavigationHelper is used on each page to aid in navigation and 
        /// process lifetime management
        /// </summary>
        public NavigationHelper NavigationHelper
        {
            get { return this.navigationHelper; }
        }

        public int Year { get; set; }
        public int Month { get; set; }

        public CompetitionsPage()
        {
            this.InitializeComponent();
            this.navigationHelper = new NavigationHelper(this);
            this.navigationHelper.LoadState += navigationHelper_LoadState;

            this.Year = DateTime.Now.Year;
            this.Month = DateTime.Now.Month;

            DefaultViewModel["Period"] = new CultureInfo("sk-SK").DateTimeFormat.GetMonthName(this.Month) + " " + this.Year.ToString();
            DefaultViewModel["NextCommand"] = new RelayCommand(() => this.NextMonth(), () => true);
            DefaultViewModel["PrevCommand"] = new RelayCommand(() => this.PrevMonth(), () => true);
        }

        public async void NextMonth()
        {
            if (this.Month == 12)
            {
                this.Year += 1;
                this.Month = 1;
            }
            else
            {
                this.Month += 1;
            }

            DefaultViewModel["Period"] = new CultureInfo("sk-SK").DateTimeFormat.GetMonthName(this.Month) + " " + this.Year.ToString();
            await this.GetCompetitions();
        }

        public async void PrevMonth()
        {
            if (this.Month == 1)
            {
                this.Year -= 1;
                this.Month = 12;
            }
            else
            {
                this.Month -= 1;
            }

            DefaultViewModel["Period"] = new CultureInfo("sk-SK").DateTimeFormat.GetMonthName(this.Month) + " " + this.Year.ToString();
            await this.GetCompetitions();
        }

        private async Task GetCompetitions()
        {
            // Get competitions
            var competitions = await DownloadHelper.GetCompetitionsByYearAndMonth(this.Year, this.Month);
            this.DefaultViewModel["Competitions"] = competitions
                .OrderBy(c => c.DateFrom)
                .ToList();
        }

        /// <summary>
        /// Populates the page with content passed during navigation.  Any saved state is also
        /// provided when recreating a page from a prior session.
        /// </summary>
        /// <param name="sender">
        /// The source of the event; typically <see cref="NavigationHelper"/>
        /// </param>
        /// <param name="e">Event data that provides both the navigation parameter passed to
        /// <see cref="Frame.Navigate(Type, Object)"/> when this page was initially requested and
        /// a dictionary of state preserved by this page during an earlier
        /// session.  The state will be null the first time a page is visited.</param>
        private async void navigationHelper_LoadState(object sender, LoadStateEventArgs e)
        {
            await this.GetCompetitions();
        }

        #region NavigationHelper registration

        /// The methods provided in this section are simply used to allow
        /// NavigationHelper to respond to the page's navigation methods.
        /// 
        /// Page specific logic should be placed in event handlers for the  
        /// <see cref="GridCS.Common.NavigationHelper.LoadState"/>
        /// and <see cref="GridCS.Common.NavigationHelper.SaveState"/>.
        /// The navigation parameter is available in the LoadState method 
        /// in addition to page state preserved during an earlier session.

        protected override void OnNavigatedTo(NavigationEventArgs e)
        {
            navigationHelper.OnNavigatedTo(e);
        }

        protected override void OnNavigatedFrom(NavigationEventArgs e)
        {
            navigationHelper.OnNavigatedFrom(e);
        }

        #endregion


        private async void Competition_Selected(object sender, ItemClickEventArgs e)
        {
            if (!ConnectionHelper.ConnectedToInternet())
            {
                await new MessageDialog("Údaje nie sú dostupné.", "Slovenská atletika").ShowAsync();  
                return;
            }
            
            if (e.ClickedItem != null )
            {
                var competition = (Competition)e.ClickedItem;

                if (competition.External)
                {
                    if (competition.bResults)
                    {
                        // Open results in web browser
                        ConnectionHelper.LaunchUri(competition.sResults);
                        return;
                    }

                    if (competition.bPropositions)
                    {
                        // Open propositions in web browser
                        ConnectionHelper.LaunchUri(competition.sPropositions);
                        return;
                    }

                    await new MessageDialog("Propozície a výsledky nie sú dostupné.", "Slovenská atletika").ShowAsync();
                }
                else
                {
                    // Open discipline list from system
                    this.Frame.Navigate(typeof(DisciplineListPage), competition.ID);
                }
            }
        }

    }
}
